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Question 1:
For the 3 wood preservatives noted, would acidic vs. alkaline soil or water conditions cause more (or less) leaching or dissolution of these compounds. How do these compounds actually leach out of wood into the environment?
Question 2:
For the 2 organic preservatives, cresol and pentachlorophenol, and assuming that they are present in the wood, what happens when the wood is combusted? What are the combustion by-products of cresol and pentachlorophenol? Are they actually oxidized and destroyed?
Question 3:
Similar to Question 2, if cresol and pentachlorophenol are actually emitted to the ambient air as vapor, what role does photolysis play in the decomp of these organics? Do these complex phenol compounds favor oxidation or reduction reactions? What are the decomposition products when photolysis or oxidation occurs?
Question 4:
With respect to chromated copper arsenate, the arsenate has the formula AsO4(-3). Is there a way to render the arsenate ion less harmful? Can oxidation or reduction occur to change the nature of the arsenate ion?
Question 5:
What is meant by glycolysis?
What is the pH of the solution when 50 grams of Ca(OH)2 was added to 1 liter of water? Ksp of Ca(OH)2 = 6.5 x 10^-6
Determine the percent by mass of calcium carbonate in the sample
Calcultate what is the value of enthalpy H reaction If the temperature increased from 35.0 degree celsius to 76 degree celsius and the heat capacity of the calorimeter = 23.3kj/c ? (the molar mass of C2H5OH = 46.07g/mol. )
using a sample of river water sample analyzed for total inorganic carbon ,The river pH= 7.1 and an inorganic C concentration of 6.97 mg C/L.c
Calculate ΔHo fusion and ΔSo fusion for the substance If the pressure is increased to 120 bar, the melting temperature increases to 375.88 K. ?
Compute the mass of air in an air-filled tire and the also determine the mass of He in a helium-filled tire
Have you observed that when you spill water over your skin on a hot day it will cool you down but if you spill vegetable oil in place of water it will not cool you down give explanation for this difference?
The pH of uncontaminated rain water is about 5.6. The pH of rain falling in Cleveland, OH is 4.2 and that in Omaha, NE is 5.5. What is the concentration of hydrogen ions in the rainfall of each city? [H] 6.3 ^ -5 for Cleveland.
Require to apply to neutralize the acidity that concluded from nitrification and determine how much CaCO 3
Compute the hydroxide ion concentration in a NH 3 solution that is 0.091 M and 0.028 M NH 4 Cl. Kb of NH 3 is 1.8 x 10 -5 .
where all compounds are assumed as covalent then determine which reaction must be endothermic and also explain your answer briefly?
Determine the molar mass of the compound if boiling point constant for CCl 4 =4.95 K · kg/mol.?
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